Writing to Communicate ... More For more writing practice, write an introductory paragraph for one of these thesis statements. 1. Write a historical introduction. Genetics is an important field of study because we can learn which health factors we can influence and which ones we can't. 2. Write a general-to-specific introduction. We should stop studying genetics because it is an invasion of privacy and because the information can be misused by employers and insurance companies. 3. Write an anecdotal introduction. It's not my lifestyle that makes me thin;* it's my genes. *You can use another adjective if you like